Home / 756,286.72-1,133,360.64-419,475.76

Finding the Fourth Proportional to 756,286.72, 1,133,360.64 and 419,475.76

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Solution

The fourth proportional to 756,286.72, 1,133,360.64 and 419,475.76 is: 628,620.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,286.72 : 1,133,360.64 = 419,475.76 : x
  2. Step 2: Convert to fraction form
    756,286.72/1,133,360.64 = 419,475.76/x
  3. Step 3: Cross multiply
    756,286.72x = 1,133,360.64 × 419,475.76
  4. Step 4: Simplify right side
    756,286.72x = 475,417,315,818.09
  5. Step 5: Solve for x
    x = 475,417,315,818.09/756,286.72
  6. Step 6: Final answer
    x = 628,620.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.